{"classifier_version":"1.4.0","documentation":"https://rirtracker.com/api/","disclaimer":"This site independently analyzes publicly available Internet number-resource records. It is not affiliated with or endorsed by ARIN, the RIPE NCC, APNIC, LACNIC, AFRINIC, the Number Resource Organization (NRO), or any other Regional Internet Registry. Classifications and hold-expiration dates are evidence-based interpretations and do not constitute confirmation that a resource is available for issuance or transfer.","resource":"216.169.144.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/216.169.144.0-216.169.147.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2019-12-18), allocated (dated 2020-01-08), allocated (dated 2020-01-10), allocated (dated 2023-04-28)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"5cb431bd53603903","registry":"ARIN","report_date":"2019-12-17","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 216.169.144.0-216.169.147.255","resource_type":"ipv4","resource":"216.169.144.0/22","start":"216.169.144.0","end":"216.169.147.255","classification":"NO_MATERIAL_CHANGE","classification_label":"No substantive resource change found","confidence":"OBSERVED_ONLY","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:40+00:00","page":"https://rirtracker.com/ip/216.169.144.0-216.169.147.255/#e-5cb431bd53603903","report_page":"https://rirtracker.com/arin/reports/2019-12-17/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.169.144.0-216.169.147.255.json","explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2019-12-18: Remove 216.169.144.0-216.169.144.255; 2019-12-18: Add 216.169.144.0-216.169.144.255), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2019-December/004023.html","retrieved_at":"2026-10-12T18:40:43+00:00","summary":"ARIN-Issued report for 2019-12-17: \"Remove 216.169.144.0-216.169.147.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20191216.gz","retrieved_at":"2026-10-12T22:16:01+00:00","summary":"ARIN delegated statistics 2019-12-16 (produced 2019-12-16T15:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20191218.gz","retrieved_at":"2026-10-12T22:16:06+00:00","summary":"ARIN delegated statistics 2019-12-18 (produced 2019-12-18T15:00:14+00:00), after the report: reserved"}]}],"classification_history":{"5cb431bd53603903":[{"raw_change_id":162626,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:46:28+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2019-12-18: Remove 216.169.144.0-216.169.144.255; 2019-12-18: Add 216.169.144.0-216.169.144.255), so the before-and-after statistics may include it."},{"raw_change_id":162626,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:40+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2019-12-18: Remove 216.169.144.0-216.169.144.255; 2019-12-18: Add 216.169.144.0-216.169.144.255), so the before-and-after statistics may include it."},{"raw_change_id":162626,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:24+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2019-12-18: Remove 216.169.144.0-216.169.144.255; 2019-12-18: Add 216.169.144.0-216.169.144.255), so the before-and-after statistics may include it."},{"raw_change_id":162626,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:40+00:00","current":1,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2019-12-18: Remove 216.169.144.0-216.169.144.255; 2019-12-18: Add 216.169.144.0-216.169.144.255), so the before-and-after statistics may include it."}]},"arin_statistics_now":{"status":"allocated (dated 2019-12-18), allocated (dated 2020-01-08), allocated (dated 2020-01-10), allocated (dated 2023-04-28)"}}